I would build cool action secquences like in Dynamite Deka (Dreamcast) or in DieHard (saturn). Such event scenes were the player is running to the next place in the level and something is happening on the way to there and you have to hit the correct button which is flashing up on the screen within two seconds or something otherwise he will run into the trap and loose health or miss a special item. And it´s also useful for me for intros and extros(?) (endsequences).